Navigational Telex, an international automated medium-frequency direct-printing service for delivery of navigational and meteorological warnings and forecasts, as well as urgent maritime safety information to ships. NAVTEX operates on 518 kHz (English) and 490 kHz (local languages) and is a key component of GMDSS.
Also known as: Navigational Telex.
Category: Maritime Communication
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LRITLong Range Identification and Tracking, an international system for tracking vessels globally, adopted by the IMO as an amendment to SOLAS.MaydayThe internationally recognised voice radio distress signal, spoken three times at the beginning of a radio distress call to indicate that a vessel, aircraft, or person is in grave and imminent danger and requires immediate assistance.Morse CodeA communication system using sequences of short and long signals (dots and dashes) to represent letters and numbers.Pan-PanAn internationally recognised urgency signal, spoken three times at the beginning of a radio message, indicating that there is an urgent situation on board a vessel but no immediate danger to life or the vessel.SARSearch and Rescue, the coordinated effort to locate and recover persons in distress at sea, involving maritime rescue coordination centres (MRCCs), coast guard units, naval vessels, and commercial ships.Ship ReportingMandatory or voluntary systems requiring vessels to report their position, course, speed, and other information to shore-based authorities when entering or transiting designated areas.
Back to DictionaryEntry updated May 2026